I am new to porting . I see that I ll have to modify the cc.h file and fill
in the correct entries for the data types and print formatters and checksum
algorithm and struct packing etc.
I just picked up the defualt cc.h file in the unix port for x86 (the one in
the unixsim for simhost), and managed to port it to the ARM device. Yes
ofcourse things would nt work correctly as I expected .
This is where things are going wrong ..
x86 logs and ARM device logs are differring and heres the two logs for your
reference.
summarizing this I know things are different for these lines
1) ARM Device:tcpip_thread: API message 0x40938e7c
x86 pc : tcpip_thread: API message 0x7ff49687adf0
2) ARM device :
tcp_bind: bind to port 7
tcpip_thread: API message 0x40646e7c
pbuf_alloc(length=65535)
pbuf_free: deallocating 0x470dc
pbuf_free: deallocating 0x4704c
pbuf_free: deallocating 0x46fbc
pbuf_free: deallocating 0x46f2c
x86
tcp_bind: bind to port 7
tcpip_thread: API message 0x7ff49787dde0
pbuf_alloc(length=90)
pbuf_alloc: allocated pbuf 0x6354f0
pbuf_alloc(length=90) == 0x6354f0
pbuf_free(0x6354f0)
pbuf_free: deallocating 0x6354f0
pbuf_alloc(length=54)
pbuf_alloc: allocated pbuf 0x6354f0
pbuf_alloc(length=54) == 0x6354f0
tcpip_thread: PACKET 0x631640
pbuf_header: old 0x635508 new 0x635516 (-14)
ip_input: iphdr->dest 0x160000e0 netif->ip_addr 0x200a8c0 (0xe0, 0xa8c0,
0x16000000)
ip_input: packet not for us.
ip_forward: not bouncing packets back on incoming interface.
pbuf_free(0x6354f0)
pbuf_free: deallocating 0x6354f0
pbuf_alloc(length=222)
Now I know that the struct api_msg that is being passed by the resp
functions in the code for ARM device and x86 pc size is different
Also the parameter that is being passed to the pbuf_alloc is going wrong in
the ARM device . It ends up asking for 65535 buff len and then runs out of
pool and ends up freeing the pbuf..
whereas in the x86 its asks for less pbuf , i.e 54 and then goes on to send
the packet successfully..
Is there a script or a way someone has written that will help me write the
correct cc.h file so that things dont break like this ...some porting tips
as to how I should judge the max pbuf pool I should set .
I think I ll have to write small pieces of code to check all this , like a
piece of code that tells me the pointer size in my ARM device or helps me
see what struct packing works best for my ARM device etc . Is there already
someone who has done things like this . Can someone plz share your Porting
experience with me and give me adivce to how to port lwip for the ARM
device without bugs satisfactorily.
Yes , I am trying this for first time .
Regards
Sraddha
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
The complete logs...
ARM device
netif: IP address of interface ^@^@ set to 192.168.0.2
netif: netmask of interface ^@^@ set to 255.255.255.0
netif: GW address of interface ^@^@ set to 192.168.0.1
tapif_init: fd 3
tapif_init: system("/system/bin/ifconfig tap0 inet 192.168.0.1");
netif: added interface tp IP addr 192.168.0.2 netmask 255.255.255.0 gw
192.168.0.1
netif: setting default interface tp
httpd_init
tcp_bind: bind to port 80
TCP/IP initialized.
Applications started.
tcpip_thread: API message 0x40938e7c
tcpip_thread: API message 0x40938e7c
udp_bind(ipaddr = 0.0.0.0, port = 7)
udp_bind: bound to 0.0.0.0, port 7
tcpip_thread: API message 0x40824e7c
tcpip_thread: API message 0x40824e7c
tcp_bind: bind to port 23
tcpip_thread: API message 0x40824e84
tcpip_thread: API message 0x40646e74
tcpip_thread: API message 0x40646e74
tcp_bind: bind to port 7
tcpip_thread: API message 0x40646e7c
pbuf_alloc(length=65535)
pbuf_alloc: allocated pbuf 0x470dc
memp_malloc: out of memory in pool PBUF_POOL
tcpip_thread: CALLBACK 0x435b8
pbuf_free(0x470dc)
pbuf_free: deallocating 0x470dc
pbuf_free: deallocating 0x4704c
pbuf_free: deallocating 0x46fbc
pbuf_free: deallocating 0x46f2c
pbuf_free: deallocating 0x46e9c
pbuf_free: deallocating 0x46e0c
pbuf_free: deallocating 0x46d7c
pbuf_free: deallocating 0x46cec
x86 pc
Host at 192.168.0.2 mask 255.255.255.0 gateway 192.168.0.1
System initialized.
netif_set_ipaddr: netif address being changed
netif: IP address of interface ^@^@ set to 192.168.0.2
netif: netmask of interface ^@^@ set to 255.255.255.0
netif: GW address of interface ^@^@ set to 192.168.0.1
tapif_init: fd 3
tapif_init: system("/sbin/ifconfig tap0 inet 192.168.0.1");
netif: added interface tp IP addr 192.168.0.2 netmask 255.255.255.0 gw
192.168.0.1
netif: setting default interface tp
httpd_init
tcp_bind: bind to port 80
TCP/IP initialized.
Applications started.
tcpip_thread: API message 0x7ff49687adf0
tcpip_thread: API message 0x7ff49687ade0
udp_bind(ipaddr = 0.0.0.0, port = 7)
udp_bind: bound to 0.0.0.0, port 7
tcpip_thread: API message 0x7ff49707cdf0
tcpip_thread: API message 0x7ff49707cde0
tcp_bind: bind to port 23
tcpip_thread: API message 0x7ff49707cdf0
tcpip_thread: API message 0x7ff49787dde0
tcpip_thread: API message 0x7ff49787ddd0
tcp_bind: bind to port 7
tcpip_thread: API message 0x7ff49787dde0
pbuf_alloc(length=90)
pbuf_alloc: allocated pbuf 0x6354f0
pbuf_alloc(length=90) == 0x6354f0
pbuf_free(0x6354f0)
pbuf_free: deallocating 0x6354f0
pbuf_alloc(length=54)
pbuf_alloc: allocated pbuf 0x6354f0
pbuf_alloc(length=54) == 0x6354f0
tcpip_thread: PACKET 0x631640
pbuf_header: old 0x635508 new 0x635516 (-14)
ip_input: iphdr->dest 0x160000e0 netif->ip_addr 0x200a8c0 (0xe0, 0xa8c0,
0x16000000)
ip_input: packet not for us.
ip_forward: not bouncing packets back on incoming interface.
pbuf_free(0x6354f0)
pbuf_free: deallocating 0x6354f0
pbuf_alloc(length=222)
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